ref: 261a9568faeeb7acc6e56bd67147917c5109ac8a
parent: d71bba1a17d6b228e7dd8b437dccbd3f6bc4698c
author: Ben Harris <[email protected]>
date: Wed Jan 11 04:43:01 EST 2023
Last-ditch maximum size limit for Magnets This makes sure that width * height <= INT_MAX, which it rather needs to be.
--- a/magnets.c
+++ b/magnets.c
@@ -36,6 +36,7 @@
#include <string.h>
#include <assert.h>
#include <ctype.h>
+#include <limits.h>
#include <math.h>
#include "puzzles.h"
@@ -232,6 +233,8 @@
{
if (params->w < 2) return "Width must be at least two";
if (params->h < 2) return "Height must be at least two";
+ if (params->w > INT_MAX / params->h)
+ return "Width times height must not be unreasonably large";
if (params->diff >= DIFF_TRICKY) {
if (params->w < 5 && params->h < 5)
return "Either width or height must be at least five for Tricky";